1 @c Copyright (C) 2009-2019 Free Software Foundation, Inc.
2 @c This is part of the GAS manual.
3 @c For copying conditions, see the file as.texinfo.
7 @chapter SCORE Dependent Features
10 @node Machine Dependencies
11 @chapter SCORE Dependent Features
14 @cindex SCORE processor
16 * SCORE-Opts:: Assembler options
17 * SCORE-Pseudo:: SCORE Assembler Directives
18 * SCORE-Syntax:: Syntax
24 @cindex options for SCORE
26 @cindex architectures, SCORE
27 @cindex SCORE architectures
29 The following table lists all available SCORE options.
33 This option sets the largest size of an object that can be referenced
34 implicitly with the @code{gp} register. The default value is 8.
37 Assemble code for a big-endian cpu
40 Assemble code for a little-endian cpu
43 Assemble code for fix data dependency
46 Assemble code for no warning message for fix data dependency
49 Assemble code for target is SCORE5
52 Assemble code for target is SCORE5U
55 Assemble code for target is SCORE7, this is default setting
58 Assemble code for target is SCORE3
61 Assemble code for target is SCORE7, this is default setting
64 Assemble code for target is SCORE3
67 Assemble code for no warning message when using temp register r1
70 Generate code for PIC. This option tells the assembler to generate
71 score position-independent macro expansions. It also tells the
72 assembler to mark the output file as PIC.
75 Assembler will not perform any optimizations
78 Sunplus release version
83 @section SCORE Assembler Directives
85 @cindex directives for SCORE
86 @cindex SCORE directives
87 A number of assembler directives are available for SCORE. The
88 following table is far from complete.
92 Let the assembler not to generate warnings if the source machine
93 language instructions happen data dependency.
96 Let the assembler to insert bubbles (32 bit nop instruction /
97 16 bit nop! Instruction) if the source machine language instructions
98 happen data dependency.
101 Let the assembler to generate warnings if the source machine
102 language instructions happen data dependency. (Default)
105 Let the assembler not to generate warnings if the source program
106 uses r1. allow user to use r1
109 Let the assembler to generate warnings if the source program uses
113 Tell the assembler to add subsequent data into the sdata section
116 Tell the assembler to add subsequent data into the rdata section
118 @item .frame "frame-register", "offset", "return-pc-register"
119 Describe a stack frame. "frame-register" is the frame register,
120 "offset" is the distance from the frame register to the virtual
121 frame pointer, "return-pc-register" is the return program register.
122 You must use ".ent" before ".frame" and only one ".frame" can be
125 @item .mask "bitmask", "frameoffset"
126 Indicate which of the integer registers are saved in the current
127 function's stack frame, this is for the debugger to explain the
130 @item .ent "proc-name"
131 Set the beginning of the procedure "proc_name". Use this directive
132 when you want to generate information for the debugger.
135 Set the end of a procedure. Use this directive to generate information
139 Switch the destination of following statements into the bss section,
140 which is used for data that is uninitialized anywhere.
145 @section SCORE Syntax
147 * SCORE-Chars:: Special Characters
151 @subsection Special Characters
153 @cindex line comment character, SCORE
154 @cindex SCORE line comment character
155 The presence of a @samp{#} appearing anywhere on a line indicates the
156 start of a comment that extends to the end of that line.
158 If a @samp{#} appears as the first character of a line then the whole
159 line is treated as a comment, but in this case the line can also be a
160 logical line number directive (@pxref{Comments}) or a preprocessor
161 control command (@pxref{Preprocessing}).
163 @cindex line separator, SCORE
164 @cindex statement separator, SCORE
165 @cindex SCORE line separator
166 The @samp{;} character can be used to separate statements on the same